<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.9.1"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>Qwt User&#39;s Guide: qwt_plot_textlabel.cpp Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtreedata.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
 <tbody>
 <tr style="height: 56px;">
  <td id="projectalign" style="padding-left: 0.5em;">
   <div id="projectname">Qwt User&#39;s Guide
   &#160;<span id="projectnumber">6.2.0</span>
   </div>
  </td>
 </tr>
 </tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.9.1 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
var searchBox = new SearchBox("searchBox", "search",false,'Search','.html');
/* @license-end */
</script>
<script type="text/javascript" src="menudata.js"></script>
<script type="text/javascript" src="menu.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
$(function() {
  initMenu('',true,false,'search.php','Search');
  $(document).ready(function() { init_search(); });
});
/* @license-end */</script>
<div id="main-nav"></div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
  <div id="nav-tree">
    <div id="nav-tree-contents">
      <div id="nav-sync" class="sync"></div>
    </div>
  </div>
  <div id="splitbar" style="-moz-user-select:none;" 
       class="ui-resizable-handle">
  </div>
</div>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
$(document).ready(function(){initNavTree('qwt__plot__textlabel_8cpp_source.html',''); initResizable(); });
/* @license-end */
</script>
<div id="doc-content">
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
     onmouseover="return searchBox.OnSearchSelectShow()"
     onmouseout="return searchBox.OnSearchSelectHide()"
     onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>

<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0" 
        name="MSearchResults" id="MSearchResults">
</iframe>
</div>

<div class="header">
  <div class="headertitle">
<div class="title">qwt_plot_textlabel.cpp</div>  </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/******************************************************************************</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Qwt Widget Library</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * Copyright (C) 1997   Josef Wilgen</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * Copyright (C) 2002   Uwe Rathmann</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * This library is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160; </div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &quot;qwt_plot_textlabel.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &quot;qwt_painter.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &quot;qwt_text.h&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &quot;qwt_math.h&quot;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160; </div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &lt;qpainter.h&gt;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &lt;qpaintengine.h&gt;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#include &lt;qpixmap.h&gt;</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160; </div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="keyword">static</span> QRect qwtItemRect( <span class="keywordtype">int</span> renderFlags,</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;    <span class="keyword">const</span> QRectF&amp; rect, <span class="keyword">const</span> QSizeF&amp; itemSize )</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;{</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;    <span class="keywordtype">int</span> x;</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;    <span class="keywordflow">if</span> ( renderFlags &amp; Qt::AlignLeft )</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;    {</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;        x = rect.left();</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;    }</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;    <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( renderFlags &amp; Qt::AlignRight )</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;    {</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;        x = rect.right() - itemSize.width();</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    }</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;    <span class="keywordflow">else</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    {</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;        x = rect.center().x() - 0.5 * itemSize.width();</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    }</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160; </div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    <span class="keywordtype">int</span> y;</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    <span class="keywordflow">if</span> ( renderFlags &amp; Qt::AlignTop )</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    {</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;        y = rect.top();</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;    }</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( renderFlags &amp; Qt::AlignBottom )</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    {</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;        y = rect.bottom() - itemSize.height();</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    }</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    <span class="keywordflow">else</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    {</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;        y = rect.center().y() - 0.5 * itemSize.height();</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    }</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160; </div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    <span class="keywordflow">return</span> QRect( x, y, itemSize.width(), itemSize.height() );</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;}</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160; </div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="keyword">class </span>QwtPlotTextLabel::PrivateData</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;{</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    PrivateData()</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;        : <a class="code" href="class_qwt_plot_text_label.html#a763aac3304919aa398f7204545288e5e">margin</a>( 5 )</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    {</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    }</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160; </div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    <a class="code" href="class_qwt_text.html">QwtText</a> <a class="code" href="class_qwt_plot_text_label.html#a13a313efab5c13440fdd3c012f21911b">text</a>;</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    <span class="keywordtype">int</span> <a class="code" href="class_qwt_plot_text_label.html#a763aac3304919aa398f7204545288e5e">margin</a>;</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160; </div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    QPixmap pixmap;</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;};</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160; </div>
<div class="line"><a name="l00082"></a><span class="lineno"><a class="line" href="class_qwt_plot_text_label.html#a19466cb637c30cfce5abfe024cbc3e3a">   82</a></span>&#160;<a class="code" href="class_qwt_plot_text_label.html#a19466cb637c30cfce5abfe024cbc3e3a">QwtPlotTextLabel::QwtPlotTextLabel</a>()</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    : <a class="code" href="class_qwt_plot_item.html">QwtPlotItem</a>( <a class="code" href="class_qwt_text.html">QwtText</a>( <span class="stringliteral">&quot;Label&quot;</span> ) )</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;{</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    m_data = <span class="keyword">new</span> PrivateData;</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160; </div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;    <a class="code" href="class_qwt_plot_item.html#a5a335be8ff488809a2cf7f4b734ad1b6">setItemAttribute</a>( <a class="code" href="class_qwt_plot_item.html#ae0fabcdd35f4818ce5bbe019b0eed062a9de83e2ad8a88796a36a11ef8b033a48">QwtPlotItem::AutoScale</a>, <span class="keyword">false</span> );</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;    <a class="code" href="class_qwt_plot_item.html#a5a335be8ff488809a2cf7f4b734ad1b6">setItemAttribute</a>( <a class="code" href="class_qwt_plot_item.html#ae0fabcdd35f4818ce5bbe019b0eed062a4e377b54bd879c60a95162b6a9e9e176">QwtPlotItem::Legend</a>, <span class="keyword">false</span> );</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160; </div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;    <a class="code" href="class_qwt_plot_item.html#a57d90e4146133b59d589c71b3a643e82">setZ</a>( 150 );</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;}</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160; </div>
<div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="class_qwt_plot_text_label.html#a20e024910ca49b8fd7326cbfca77df22">   94</a></span>&#160;<a class="code" href="class_qwt_plot_text_label.html#a20e024910ca49b8fd7326cbfca77df22">QwtPlotTextLabel::~QwtPlotTextLabel</a>()</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;{</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;    <span class="keyword">delete</span> m_data;</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;}</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160; </div>
<div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="class_qwt_plot_text_label.html#af02e767cdb6808cb2a2490445f049184">  100</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="class_qwt_plot_text_label.html#af02e767cdb6808cb2a2490445f049184">QwtPlotTextLabel::rtti</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="class_qwt_plot_item.html#ab149ac85e233ce9cedf2f2f2af871bf3ae6f046fd43f578ad8a59243e6e665167">QwtPlotItem::Rtti_PlotTextLabel</a>;</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;}</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160; </div>
<div class="line"><a name="l00115"></a><span class="lineno"><a class="line" href="class_qwt_plot_text_label.html#adce2e99ef7816ff544c5a5525bf05006">  115</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_plot_text_label.html#adce2e99ef7816ff544c5a5525bf05006">QwtPlotTextLabel::setText</a>( <span class="keyword">const</span> <a class="code" href="class_qwt_text.html">QwtText</a>&amp; text )</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;{</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    <span class="keywordflow">if</span> ( m_data-&gt;text != <a class="code" href="class_qwt_plot_text_label.html#a13a313efab5c13440fdd3c012f21911b">text</a> )</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;    {</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;        m_data-&gt;text = <a class="code" href="class_qwt_plot_text_label.html#a13a313efab5c13440fdd3c012f21911b">text</a>;</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160; </div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;        <a class="code" href="class_qwt_plot_text_label.html#ac498a144d548eddd4209da5979815c76">invalidateCache</a>();</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;        <a class="code" href="class_qwt_plot_item.html#ad956fdbce5b0721abccce6d09fe4d5ce">itemChanged</a>();</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;    }</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;}</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160; </div>
<div class="line"><a name="l00130"></a><span class="lineno"><a class="line" href="class_qwt_plot_text_label.html#a13a313efab5c13440fdd3c012f21911b">  130</a></span>&#160;<a class="code" href="class_qwt_text.html">QwtText</a> <a class="code" href="class_qwt_plot_text_label.html#a13a313efab5c13440fdd3c012f21911b">QwtPlotTextLabel::text</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    <span class="keywordflow">return</span> m_data-&gt;text;</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;}</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160; </div>
<div class="line"><a name="l00146"></a><span class="lineno"><a class="line" href="class_qwt_plot_text_label.html#a28bba339d2996ae2a8a426575820a816">  146</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_plot_text_label.html#a28bba339d2996ae2a8a426575820a816">QwtPlotTextLabel::setMargin</a>( <span class="keywordtype">int</span> margin )</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;{</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;    <a class="code" href="class_qwt_plot_text_label.html#a763aac3304919aa398f7204545288e5e">margin</a> = qMax( <a class="code" href="class_qwt_plot_text_label.html#a763aac3304919aa398f7204545288e5e">margin</a>, 0 );</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;    <span class="keywordflow">if</span> ( m_data-&gt;margin != <a class="code" href="class_qwt_plot_text_label.html#a763aac3304919aa398f7204545288e5e">margin</a> )</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;    {</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;        m_data-&gt;margin = <a class="code" href="class_qwt_plot_text_label.html#a763aac3304919aa398f7204545288e5e">margin</a>;</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;        <a class="code" href="class_qwt_plot_item.html#ad956fdbce5b0721abccce6d09fe4d5ce">itemChanged</a>();</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;    }</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;}</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160; </div>
<div class="line"><a name="l00160"></a><span class="lineno"><a class="line" href="class_qwt_plot_text_label.html#a763aac3304919aa398f7204545288e5e">  160</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="class_qwt_plot_text_label.html#a763aac3304919aa398f7204545288e5e">QwtPlotTextLabel::margin</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    <span class="keywordflow">return</span> m_data-&gt;margin;</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;}</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160; </div>
<div class="line"><a name="l00176"></a><span class="lineno"><a class="line" href="class_qwt_plot_text_label.html#ac8346fafbc181ebabf11dfee5ea4cc2f">  176</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_plot_text_label.html#ac8346fafbc181ebabf11dfee5ea4cc2f">QwtPlotTextLabel::draw</a>( QPainter* painter,</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_qwt_scale_map.html">QwtScaleMap</a>&amp; xMap, <span class="keyword">const</span> <a class="code" href="class_qwt_scale_map.html">QwtScaleMap</a>&amp; yMap,</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;    <span class="keyword">const</span> QRectF&amp; canvasRect )<span class="keyword"> const</span></div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;    Q_UNUSED( xMap );</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;    Q_UNUSED( yMap );</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160; </div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">int</span> m = m_data-&gt;margin;</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160; </div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;    <span class="keyword">const</span> QRectF rect = <a class="code" href="class_qwt_plot_text_label.html#adca7b1bbbda60fc01e4eccf85b643db4">textRect</a>( canvasRect.adjusted( m, m, -m, -m ),</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;        m_data-&gt;text.textSize( painter-&gt;font() ) );</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160; </div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;    <span class="keywordtype">bool</span> doCache = <a class="code" href="class_qwt_painter.html#ae9af230df7bb8d40b802d4f3205a8631">QwtPainter::roundingAlignment</a>( painter );</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;    <span class="keywordflow">if</span> ( doCache )</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;    {</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;        <span class="keywordflow">switch</span>( painter-&gt;paintEngine()-&gt;type() )</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;        {</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;            <span class="keywordflow">case</span> QPaintEngine::Picture:</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;            <span class="keywordflow">case</span> QPaintEngine::User: <span class="comment">// usually QwtGraphic</span></div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;            {</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;                <span class="comment">// don&#39;t use a cache for record/replay devices</span></div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;                doCache = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;            }</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;            <span class="keywordflow">default</span>:;</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;        }</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;    }</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160; </div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;    <span class="keywordflow">if</span> ( doCache )</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;    {</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;        <span class="comment">// when the paint device is aligning it is not one</span></div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;        <span class="comment">// where scalability matters ( PDF, SVG ).</span></div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;        <span class="comment">// As rendering a text label is an expensive operation</span></div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;        <span class="comment">// we use a cache.</span></div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160; </div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;        <span class="keywordtype">int</span> pw = 0;</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;        <span class="keywordflow">if</span> ( m_data-&gt;text.borderPen().style() != Qt::NoPen )</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;            pw = qMax( m_data-&gt;text.borderPen().width(), 1 );</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160; </div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;        QRect pixmapRect;</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;        pixmapRect.setLeft( qwtFloor( rect.left() ) - pw );</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;        pixmapRect.setTop( qwtFloor( rect.top() ) - pw );</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;        pixmapRect.setRight( qwtCeil( rect.right() ) + pw );</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;        pixmapRect.setBottom( qwtCeil( rect.bottom() ) + pw );</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160; </div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;<span class="preprocessor">#if QT_VERSION &gt;= 0x050000</span></div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;        <span class="keyword">const</span> qreal pixelRatio = <a class="code" href="class_qwt_painter.html#abcd52c8648b02d72a44851578f3b5ed7">QwtPainter::devicePixelRatio</a>( painter-&gt;device() );</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;        <span class="keyword">const</span> QSize scaledSize = pixmapRect.size() * pixelRatio;</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;        <span class="keyword">const</span> QSize scaledSize = pixmapRect.size();</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160; </div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;        <span class="keywordflow">if</span> ( m_data-&gt;pixmap.isNull() ||</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;            ( scaledSize != m_data-&gt;pixmap.size() ) )</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;        {</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;            m_data-&gt;pixmap = QPixmap( scaledSize );</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;<span class="preprocessor">#if QT_VERSION &gt;= 0x050000</span></div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;            m_data-&gt;pixmap.setDevicePixelRatio( pixelRatio );</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;            m_data-&gt;pixmap.fill( Qt::transparent );</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160; </div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;            <span class="keyword">const</span> QRect r( pw, pw,</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;                pixmapRect.width() - 2 * pw, pixmapRect.height() - 2 * pw );</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160; </div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;            QPainter pmPainter( &amp;m_data-&gt;pixmap );</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;            m_data-&gt;text.draw( &amp;pmPainter, r );</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;        }</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160; </div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;        painter-&gt;drawPixmap( pixmapRect, m_data-&gt;pixmap );</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;    }</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;    <span class="keywordflow">else</span></div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;    {</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;        m_data-&gt;text.draw( painter, rect );</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;    }</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;}</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160; </div>
<div class="line"><a name="l00263"></a><span class="lineno"><a class="line" href="class_qwt_plot_text_label.html#adca7b1bbbda60fc01e4eccf85b643db4">  263</a></span>&#160;QRectF <a class="code" href="class_qwt_plot_text_label.html#adca7b1bbbda60fc01e4eccf85b643db4">QwtPlotTextLabel::textRect</a>(</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;    <span class="keyword">const</span> QRectF&amp; rect, <span class="keyword">const</span> QSizeF&amp; textSize )<span class="keyword"> const</span></div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;    <span class="keywordflow">return</span> qwtItemRect( m_data-&gt;text.renderFlags(), rect, textSize );</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;}</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160; </div>
<div class="line"><a name="l00270"></a><span class="lineno"><a class="line" href="class_qwt_plot_text_label.html#ac498a144d548eddd4209da5979815c76">  270</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_plot_text_label.html#ac498a144d548eddd4209da5979815c76">QwtPlotTextLabel::invalidateCache</a>()</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;{</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;    m_data-&gt;pixmap = QPixmap();</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;}</div>
<div class="ttc" id="aclass_qwt_painter_html_abcd52c8648b02d72a44851578f3b5ed7"><div class="ttname"><a href="class_qwt_painter.html#abcd52c8648b02d72a44851578f3b5ed7">QwtPainter::devicePixelRatio</a></div><div class="ttdeci">static qreal devicePixelRatio(const QPaintDevice *)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__painter_8cpp_source.html#l01491">qwt_painter.cpp:1491</a></div></div>
<div class="ttc" id="aclass_qwt_painter_html_ae9af230df7bb8d40b802d4f3205a8631"><div class="ttname"><a href="class_qwt_painter.html#ae9af230df7bb8d40b802d4f3205a8631">QwtPainter::roundingAlignment</a></div><div class="ttdeci">static bool roundingAlignment()</div><div class="ttdef"><b>Definition:</b> <a href="qwt__painter_8h_source.html#l00183">qwt_painter.h:183</a></div></div>
<div class="ttc" id="aclass_qwt_plot_item_html"><div class="ttname"><a href="class_qwt_plot_item.html">QwtPlotItem</a></div><div class="ttdoc">Base class for items on the plot canvas.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__item_8h_source.html#l00066">qwt_plot_item.h:67</a></div></div>
<div class="ttc" id="aclass_qwt_plot_item_html_a57d90e4146133b59d589c71b3a643e82"><div class="ttname"><a href="class_qwt_plot_item.html#a57d90e4146133b59d589c71b3a643e82">QwtPlotItem::setZ</a></div><div class="ttdeci">void setZ(double z)</div><div class="ttdoc">Set the z value.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__item_8cpp_source.html#l00165">qwt_plot_item.cpp:165</a></div></div>
<div class="ttc" id="aclass_qwt_plot_item_html_a5a335be8ff488809a2cf7f4b734ad1b6"><div class="ttname"><a href="class_qwt_plot_item.html#a5a335be8ff488809a2cf7f4b734ad1b6">QwtPlotItem::setItemAttribute</a></div><div class="ttdeci">void setItemAttribute(ItemAttribute, bool on=true)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__item_8cpp_source.html#l00228">qwt_plot_item.cpp:228</a></div></div>
<div class="ttc" id="aclass_qwt_plot_item_html_ab149ac85e233ce9cedf2f2f2af871bf3ae6f046fd43f578ad8a59243e6e665167"><div class="ttname"><a href="class_qwt_plot_item.html#ab149ac85e233ce9cedf2f2f2af871bf3ae6f046fd43f578ad8a59243e6e665167">QwtPlotItem::Rtti_PlotTextLabel</a></div><div class="ttdeci">@ Rtti_PlotTextLabel</div><div class="ttdoc">For QwtPlotTextLabel.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__item_8h_source.html#l00123">qwt_plot_item.h:123</a></div></div>
<div class="ttc" id="aclass_qwt_plot_item_html_ad956fdbce5b0721abccce6d09fe4d5ce"><div class="ttname"><a href="class_qwt_plot_item.html#ad956fdbce5b0721abccce6d09fe4d5ce">QwtPlotItem::itemChanged</a></div><div class="ttdeci">virtual void itemChanged()</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__item_8cpp_source.html#l00481">qwt_plot_item.cpp:481</a></div></div>
<div class="ttc" id="aclass_qwt_plot_item_html_ae0fabcdd35f4818ce5bbe019b0eed062a4e377b54bd879c60a95162b6a9e9e176"><div class="ttname"><a href="class_qwt_plot_item.html#ae0fabcdd35f4818ce5bbe019b0eed062a4e377b54bd879c60a95162b6a9e9e176">QwtPlotItem::Legend</a></div><div class="ttdeci">@ Legend</div><div class="ttdoc">The item is represented on the legend.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__item_8h_source.html#l00150">qwt_plot_item.h:150</a></div></div>
<div class="ttc" id="aclass_qwt_plot_item_html_ae0fabcdd35f4818ce5bbe019b0eed062a9de83e2ad8a88796a36a11ef8b033a48"><div class="ttname"><a href="class_qwt_plot_item.html#ae0fabcdd35f4818ce5bbe019b0eed062a9de83e2ad8a88796a36a11ef8b033a48">QwtPlotItem::AutoScale</a></div><div class="ttdeci">@ AutoScale</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__item_8h_source.html#l00157">qwt_plot_item.h:157</a></div></div>
<div class="ttc" id="aclass_qwt_plot_text_label_html_a13a313efab5c13440fdd3c012f21911b"><div class="ttname"><a href="class_qwt_plot_text_label.html#a13a313efab5c13440fdd3c012f21911b">QwtPlotTextLabel::text</a></div><div class="ttdeci">QwtText text() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__textlabel_8cpp_source.html#l00130">qwt_plot_textlabel.cpp:130</a></div></div>
<div class="ttc" id="aclass_qwt_plot_text_label_html_a19466cb637c30cfce5abfe024cbc3e3a"><div class="ttname"><a href="class_qwt_plot_text_label.html#a19466cb637c30cfce5abfe024cbc3e3a">QwtPlotTextLabel::QwtPlotTextLabel</a></div><div class="ttdeci">QwtPlotTextLabel()</div><div class="ttdoc">Constructor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__textlabel_8cpp_source.html#l00082">qwt_plot_textlabel.cpp:82</a></div></div>
<div class="ttc" id="aclass_qwt_plot_text_label_html_a20e024910ca49b8fd7326cbfca77df22"><div class="ttname"><a href="class_qwt_plot_text_label.html#a20e024910ca49b8fd7326cbfca77df22">QwtPlotTextLabel::~QwtPlotTextLabel</a></div><div class="ttdeci">virtual ~QwtPlotTextLabel()</div><div class="ttdoc">Destructor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__textlabel_8cpp_source.html#l00094">qwt_plot_textlabel.cpp:94</a></div></div>
<div class="ttc" id="aclass_qwt_plot_text_label_html_a28bba339d2996ae2a8a426575820a816"><div class="ttname"><a href="class_qwt_plot_text_label.html#a28bba339d2996ae2a8a426575820a816">QwtPlotTextLabel::setMargin</a></div><div class="ttdeci">void setMargin(int margin)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__textlabel_8cpp_source.html#l00146">qwt_plot_textlabel.cpp:146</a></div></div>
<div class="ttc" id="aclass_qwt_plot_text_label_html_a763aac3304919aa398f7204545288e5e"><div class="ttname"><a href="class_qwt_plot_text_label.html#a763aac3304919aa398f7204545288e5e">QwtPlotTextLabel::margin</a></div><div class="ttdeci">int margin() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__textlabel_8cpp_source.html#l00160">qwt_plot_textlabel.cpp:160</a></div></div>
<div class="ttc" id="aclass_qwt_plot_text_label_html_ac498a144d548eddd4209da5979815c76"><div class="ttname"><a href="class_qwt_plot_text_label.html#ac498a144d548eddd4209da5979815c76">QwtPlotTextLabel::invalidateCache</a></div><div class="ttdeci">void invalidateCache()</div><div class="ttdoc">Invalidate all internal cache.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__textlabel_8cpp_source.html#l00270">qwt_plot_textlabel.cpp:270</a></div></div>
<div class="ttc" id="aclass_qwt_plot_text_label_html_ac8346fafbc181ebabf11dfee5ea4cc2f"><div class="ttname"><a href="class_qwt_plot_text_label.html#ac8346fafbc181ebabf11dfee5ea4cc2f">QwtPlotTextLabel::draw</a></div><div class="ttdeci">virtual void draw(QPainter *, const QwtScaleMap &amp;, const QwtScaleMap &amp;, const QRectF &amp;) const override</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__textlabel_8cpp_source.html#l00176">qwt_plot_textlabel.cpp:176</a></div></div>
<div class="ttc" id="aclass_qwt_plot_text_label_html_adca7b1bbbda60fc01e4eccf85b643db4"><div class="ttname"><a href="class_qwt_plot_text_label.html#adca7b1bbbda60fc01e4eccf85b643db4">QwtPlotTextLabel::textRect</a></div><div class="ttdeci">virtual QRectF textRect(const QRectF &amp;, const QSizeF &amp;) const</div><div class="ttdoc">Align the text label.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__textlabel_8cpp_source.html#l00263">qwt_plot_textlabel.cpp:263</a></div></div>
<div class="ttc" id="aclass_qwt_plot_text_label_html_adce2e99ef7816ff544c5a5525bf05006"><div class="ttname"><a href="class_qwt_plot_text_label.html#adce2e99ef7816ff544c5a5525bf05006">QwtPlotTextLabel::setText</a></div><div class="ttdeci">void setText(const QwtText &amp;)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__textlabel_8cpp_source.html#l00115">qwt_plot_textlabel.cpp:115</a></div></div>
<div class="ttc" id="aclass_qwt_plot_text_label_html_af02e767cdb6808cb2a2490445f049184"><div class="ttname"><a href="class_qwt_plot_text_label.html#af02e767cdb6808cb2a2490445f049184">QwtPlotTextLabel::rtti</a></div><div class="ttdeci">virtual int rtti() const override</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__textlabel_8cpp_source.html#l00100">qwt_plot_textlabel.cpp:100</a></div></div>
<div class="ttc" id="aclass_qwt_scale_map_html"><div class="ttname"><a href="class_qwt_scale_map.html">QwtScaleMap</a></div><div class="ttdoc">A scale map.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__scale__map_8h_source.html#l00026">qwt_scale_map.h:27</a></div></div>
<div class="ttc" id="aclass_qwt_text_html"><div class="ttname"><a href="class_qwt_text.html">QwtText</a></div><div class="ttdoc">A class representing a text.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__text_8h_source.html#l00051">qwt_text.h:52</a></div></div>
</div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
  <ul>
    <li class="navelem"><a class="el" href="dir_68267d1309a1af8e8297ef4c3efbcdba.html">src</a></li><li class="navelem"><b>qwt_plot_textlabel.cpp</b></li>
    <li class="footer">Generated by <a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.9.1 </li>
  </ul>
</div>
</body>
</html>
